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The trilobite body is divided into three major sections : 1 – cephalon; 2 – thorax; 3 – pygidium. Trilobites are so named for the three longitudinal lobes: 4 – right pleural lobe; 5 – axial lobe; 6 – left pleural lobe; the antennae and legs are not shown in these diagrams.
English: The trilobite body is divided into three major sections : 1 – cephalon; 2 – thorax; 3 – pygidium. Trilobites are so named for the three longitudinal lobes: 4 – right pleural lobe; 5 – axial lobe; 6 – left pleural lobe; the antennae and legs are not shown in these diagrams.
Diagram showing the location of the cephalon, thorax and pygidium of a trilobite. The pygidium (pl.: pygidia) is the posterior body part or shield of crustaceans and some other arthropods, such as insects and the extinct trilobites. In groups other than insects, it contains the anus and, in females, the ovipositor.
Sam Gon III @ trilobites.info, Image:SamGonIII_cepthopyg.png: Author: Ch1902 vector, Sam Gon III raster: Other versions: Derivative works of this file: Trilobite cephalon ventral anatomy.png; Trilobite facial suture types.png; Trilobite hypostome types based on attachment.png; Image:Trilobite sections-en.svg
The following other wikis use this file: Usage on ar.wikipedia.org طقم (أحياء) ذييل; Usage on cs.wikipedia.org Tagma (biologie) Usage on de.wikipedia.org
Pages in category "Trilobite anatomy" The following 5 pages are in this category, out of 5 total. This list may not reflect recent changes. A. Arthropod leg; C.
Trilobite anatomy (5 P) G. Trilobites by geological period (6 C) L. Trilobites by location (1 C) T. Trilobite taxonomy (10 C)
Triarthrus is an average size trilobite (up to about 5 centimetres or 2.0 inches) and its moderately convex body is about twice as long as wide (excluding spines). Like in all Olenidae, the headshield (or cephalon ) of Triarthrus has opisthoparian sutures , and the right and left free cheeks that they define are yoked.